Reference Audio Analyzer

FiiO E10K Olympus 2 is available in reports and services. You are on the headphone sensitivity and amplifier output voltage comparison page.



Information for entry level users

reports for a newbie (Headphone amplifier)


Voltage and Sensitivity: FiiO E10K Olympus 2 Low Bass Off

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General Graph Display Options
Show title of devices:

Location of names:

Parameters for displaying the graphics of the amplifier/s

Operating mode of the amplifiers F.A.Q.:

Graph Display Type:

RAW coordinates:

Graph Display Options of Headphones

Selected headphones

Location of names:

Display the info of main device (No select) :





Other parameter
Peak factor in the unevenness of the music volume:
dB
Desired SPL sound pressure level when listening to music:
dB SPL




Parameters of the axis of the graph
Loaded impedance headphones:
- ohm

Range of Voltage:
- dBV
Display impedance value in dB(ohm) :





Link to this page with the selected parameters




Graph display options (display, color, menu, delete) and the main characteristics of the selected devices

Selected amplifiers, characteristics (for plotting graphics). Class: Pure or equal class A F.A.Q.

Menu Delete Close Color Name Voltage, dBV/VRMS Current, dB(mA)/mA Output Impedance, ohm
FiiO E10K Olympus 2 Low Bass Off -29.29 / 0.03 6.17 / 2.04 1.04
FiiO E10K Olympus 2 Hi Bass Off -22.47 / 0.08 9.30 / 2.92 1.06
FiiO E10K Olympus 2 Hi Bass On 0.00 / 1.00 0.00 / 1.00 0.00
FiiO E10K Olympus 2 Hi, Bass Off, Vol 2 0.00 / 1.00 0.00 / 1.00 0.00

Graph display options (display, color, menu, delete) and the main characteristics of the selected headphones

Menu Delete Close Color Close Sensitivity of voltage , dB/V SPL Impedance , ohm
Apple EarPods 118.0 42.2
Dunu DN-2002 133.5 5.9
Enigma Acoustics & Lotoo Dharma D200 125.0 30.2
Sunrise Dragon Default 122.2 119.5
Sunrise Feeling 2 123.8 18.2
xDuoo EP1 131.8 16.9




Display headphones at specified limits

Voltage, dBV Current, dB(mA) Output Impedance, ohm
Нижняя граница
Lower limit




How to change the color of graphs?





Amplifiers and Headphones by parameters

Custom AMP

Delete Close Color Name Voltage, dBV Current, dB(mA) Output Impedance, ohm





Headphones

Delete Close Color Name Sensitivity of voltage , dB/V SPL Impedance , ohm





Graph of Sensitivity

Delete Close Color Name Sensitivity Type







How to change the color of graphs?



Maximum level of the load
Loaded impedance headphones ohm

Marker:
Equivalent power class F.A.Q. Equiv. class A Equiv. class AB Equiv. class B Max No Current limit
dBV dBV dBV dBV dBV
FiiO E10K Olympus 2 Low Bass Off -29.6 0.4 0.4 0.4 0.4
FiiO E10K Olympus 2 Hi Bass Off -22.8 7.2 7.2 7.2 7.2
FiiO E10K Olympus 2 Hi Bass On -29.9 -29.9 -29.9 -29.9 0.0
FiiO E10K Olympus 2 Hi, Bass Off, Vol 2 -29.9 -29.9 -29.9 -29.9 0.0



About maximum voltage levels of the load

To compare the amplifiers for loudness from the impedance, set the required impedance value.

Why is the "volume" expressed in dBV

When you compare amplifiers by loudness, the voltage value, expressed in dBV, should be used. The difference in voltage will show the difference in decibel (dB) between the amplifiers.

The power values in regular mW do not convenient to direct comparison.

The direct comparison by power is only suitable for speaker amplifiers operating with an ultra-low-ohm load. This does not apply to headphone amplifiers where the headphone resistance is higher than 8-16 ohms.

Because of the higher resistance of the headphones, when compare the volume of a musical signal it is necessary to simultaneously take into account the current and voltage limits. The speaker amplifier have limit by current. For the exact difference between the amplifiers in decibel, the power value must be converted into voltage in units of dBV, taking into account the margin by current for the music signal for every AMP.




Рекомендации совместимости наушников c усилителями на основе технических характеристик

Apple EarPods + FiiO E10K Olympus 2 Low Bass Off

With the measured characteristics of the Apple EarPods, the sensitivity of 118.0 dB/VRMS and the impedance of 42.2 ohms, with the FiiO E10K Olympus 2 Low Bass Off the average volume on the music signal of 90 дБ SPL in pure mode (equivalent Class A mode) will not be provided. This requires an amplifier with a voltage of -19.0 dBV and a current of 8.5 dB(mA).

FiiO E10K Olympus 2 Low Bass Off can provide voltages up to -29.5 dBV and up to a current of 6.2 dB(mA).

FiiO E10K Olympus 2 Low Bass Off with EarPods will provide the best sound quality in the volume range from 73.5 to 79.5 dB SPL. Thus, relative the level of 90dB SPL there is no any margin by the volume up. In the lower quality mode, the FiiO E10K Olympus 2 Low Bass Off provides up to 109.5 dB SPL, which gives a margin of 19.5 dB.

Dunu DN-2002 + FiiO E10K Olympus 2 Low Bass Off

With the measured characteristics of the Dunu DN-2002, the sensitivity of 133.5 dB/VRMS and the impedance of 5.9 ohms, with the FiiO E10K Olympus 2 Low Bass Off the average volume on the music signal of 90 дБ SPL in pure mode (equivalent Class A mode) will not be provided. This requires an amplifier with a voltage of -34.5 dBV and a current of 10.1 dB(mA).

FiiO E10K Olympus 2 Low Bass Off can provide voltages up to -30.7 dBV and up to a current of 6.2 dB(mA). Due to the current limit, the maximum voltage with a headphone impedance of 5.9 Ohm in pure mode will be -38.4 dBV.

FiiO E10K Olympus 2 Low Bass Off with DN-2002 will provide the best sound quality in the volume range from 87.8 to 86.1 dB SPL. Thus, relative the level of 90dB SPL there is no any margin by the volume up. In the lower quality mode, the FiiO E10K Olympus 2 Low Bass Off provides up to 116.1 dB SPL, which gives a margin of 26.1 dB.

Enigma Acoustics & Lotoo Dharma D200 + FiiO E10K Olympus 2 Low Bass Off

With the measured characteristics of the Enigma Acoustics & Lotoo Dharma D200, the sensitivity of 125.0 dB/VRMS and the impedance of 30.2 ohms, with the FiiO E10K Olympus 2 Low Bass Off the average volume on the music signal of 90 дБ SPL in pure mode (equivalent Class A mode) will not be provided. This requires an amplifier with a voltage of -26.0 dBV and a current of 4.3 dB(mA).

FiiO E10K Olympus 2 Low Bass Off can provide voltages up to -29.6 dBV and up to a current of 6.2 dB(mA).

FiiO E10K Olympus 2 Low Bass Off with Dharma D200 will provide the best sound quality in the volume range from 80.5 to 86.5 dB SPL. Thus, relative the level of 90dB SPL there is no any margin by the volume up. In the lower quality mode, the FiiO E10K Olympus 2 Low Bass Off provides up to 116.5 dB SPL, which gives a margin of 26.5 dB.

Sunrise Dragon Default + FiiO E10K Olympus 2 Low Bass Off

With the measured characteristics of the Sunrise Dragon Default, the sensitivity of 122.2 dB/VRMS and the impedance of 119.5 ohms, with the FiiO E10K Olympus 2 Low Bass Off the average volume on the music signal of 90 дБ SPL in pure mode (equivalent Class A mode) will not be provided. This requires an amplifier with a voltage of -23.2 dBV and a current of -4.7 dB(mA).

FiiO E10K Olympus 2 Low Bass Off can provide voltages up to -29.4 dBV and up to a current of 6.2 dB(mA).

FiiO E10K Olympus 2 Low Bass Off with Dragon will provide the best sound quality in the volume range from 77.8 to 83.8 dB SPL. Thus, relative the level of 90dB SPL there is no any margin by the volume up. In the lower quality mode, the FiiO E10K Olympus 2 Low Bass Off provides up to 113.8 dB SPL, which gives a margin of 23.8 dB.

Sunrise Feeling 2 + FiiO E10K Olympus 2 Low Bass Off

With the measured characteristics of the Sunrise Feeling 2, the sensitivity of 123.8 dB/VRMS and the impedance of 18.2 ohms, with the FiiO E10K Olympus 2 Low Bass Off the average volume on the music signal of 90 дБ SPL in pure mode (equivalent Class A mode) will not be provided. This requires an amplifier with a voltage of -24.8 dBV and a current of 10.0 dB(mA).

FiiO E10K Olympus 2 Low Bass Off can provide voltages up to -29.8 dBV and up to a current of 6.2 dB(mA).

FiiO E10K Olympus 2 Low Bass Off with Feeling 2 will provide the best sound quality in the volume range from 79.0 to 85.0 dB SPL. Thus, relative the level of 90dB SPL there is no any margin by the volume up. In the lower quality mode, the FiiO E10K Olympus 2 Low Bass Off provides up to 115.0 dB SPL, which gives a margin of 25.0 dB.

xDuoo EP1 + FiiO E10K Olympus 2 Low Bass Off

With the measured characteristics of the xDuoo EP1, the sensitivity of 131.8 dB/VRMS and the impedance of 16.9 ohms, with the FiiO E10K Olympus 2 Low Bass Off the average volume on the music signal of 90 дБ SPL in pure mode (equivalent Class A mode) will be provided. This requires an amplifier with a voltage of -32.8 dBV and a current of 2.6 dB(mA).

FiiO E10K Olympus 2 Low Bass Off can provide voltages up to -29.8 dBV and up to a current of 6.2 dB(mA).

FiiO E10K Olympus 2 Low Bass Off with EP1 will provide the best sound quality in the volume range from 87.0 to 93.0 dB SPL. Thus, relative the level of 90 dB SPL there is a margin of 3.0 dB above by the volume and 3.0 dB below.


О рекомендациях


Рекомендации составлены для среднего уровня громкости при прослушивании музыки в 90 дБ SPL c учетом неравномерности громкости по музыкальному треку в виде пик-фактора в 9 дБ. Если Вам нужен анализ для другого звукового давления, или для определенной музыки с иным пик-фактором, задайте в настройках альтернативные значения для "Desired SPL sound pressure level when listening to music" и "Peak factor in the unevenness of the music volume". По умолчанию параметры не учитывают окружающую обстановку или шумоизоляцию наушников, предполагая, что прослушивание производится днем качественной не перекомпрессированной музыки. При анализе прослушивания музыки ночью в спокойной обстановке, стоит уменьшить звуковое давление на 12-15 дБ.

Выше на графике показаны зоны напряжения от нагрузки. Для наушников высчитывается необходимое напряжение, которое должно быть на выходе усилителя и оценивается с тем напряжением, которое может усилитель выдать. Если усилитель способен выдать большее напряжение, то высчитывается дополнительный запас по прибавке громкости или указывается, насколько громкости может не хватить. Аналогично считается и запас по регулировке громкости вниз. В большинстве случаев, при снижении громкости снижается и параметр сигнал/шум, из-за чего становится слышимым фоновый шум. При использовании аналоговых регуляторов в минимальных положениях часто наблюдается дисбаланс каналов. Диапазон регулировки громкости установлен как дБ. Если Вам известно, что устройство обладает более высокими соотношением сигнал-шум, или использует качественную реализацию регулировки громкости через реле, то увеличьте в настройках параметр "Optimal range of volume control".


Рекомендации описывают график. На графике по горизонтали отображена ось сопротивлений подключаемых наушников. По вертикали ось напряжения на выходе усилителя в единицах dBV. Точками на графике отображается необходимое напряжение для наушников для заданного звукового давления. В самом лучшем случае точка должна быть в середине по вертикали голубой зоны.

Голубая зона является наиболее качественным режимом усилителя.





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FiiO E10K Olympus 2 is available in reports and services. You are on the headphone sensitivity and amplifier output voltage comparison page.



Information for entry level users

reports for a newbie (Headphone amplifier)



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Comments

Commentary view:





exmash
2019-02-18 00:10:02

Комментарий к сервису Voltage and Sensitivity : Beyerdynamic DT 880 Pro Default
Привильно ли понимаю, что для HD650 этого плеера хватит, а для DT880 нет?
Reply


romanrex
2019-02-18 00:56:26

Комментарий к сервису Voltage and Sensitivity : Beyerdynamic DT 880 Pro Default

exmash 2019-02-18 00:10:02
Комментарий к сервису Voltage and Sensitivity : Beyerdynamic DT 880 Pro Default
Привильно ли понимаю, что для HD650 этого плеера хватит, а для DT880 нет?


График показывает, что для общего случая C4 Pro хватит для HD650 без запаса по громкости, а для DT 880 Pro желателен источник на 2.5 дБ громче.

Но для своего случая надо выбрать знакомые наушники со знакомым источником и выяснить, какая для себя громкость является оптимальной или достаточной. И эту громкость уже сопоставить с HD650/DT 880 Pro и C4 Pro.
Reply